import Vue from 'vue'
import VueRouter from 'vue-router'

// import Login from '../components/Login.vue'
// import Home from '../components/Home.vue'
// import Welcome from '../components/Welcome.vue'
const Login = () => import(/* webpackChunkName: "login_home_welcome" */ '../components/Login.vue')
const Home = () => import(/* webpackChunkName: "login_home_welcome" */ '../components/Home.vue')
const Welcome = () => import(/* webpackChunkName: "login_home_welcome" */ '../components/Welcome.vue')

// import Users from '../components/user/Users.vue'
// import Rights from '../components/power/Rights.vue'
// import Roles from '../components/power/Roles.vue'
const Users = () => import(/* webpackChunkName: "Users_Rights_Roles" */ '../components/user/Users.vue')
const Rights = () => import(/* webpackChunkName: "Users_Rights_Roles" */ '../components/power/Rights.vue')
const Roles = () => import(/* webpackChunkName: "Users_Rights_Roles" */ '../components/power/Roles.vue')

// import Cate from '../components/goods/Cate.vue'
// import Params from '../components/goods/Params.vue'
const Cate = () => import(/* webpackChunkName: "Cate_Params" */ '../components/goods/Cate.vue')
const Params = () => import(/* webpackChunkName: "Cate_Params" */ '../components/goods/Params.vue')


// import GoodsList from '../components/goods/List.vue'
// import Add from '../components/goods/Add.vue'
const GoodsList = () => import(/* webpackChunkName: "GoodsList_Add" */ '../components/goods/List.vue')
const Add = () => import(/* webpackChunkName: "GoodsList_Add" */ '../components/goods/Add.vue')

// import Order from '../components/order/Order.vue'
// import Report from '../components/report/Report.vue'
const Order = () => import(/* webpackChunkName: "Order_Report" */ '../components/order/Order.vue')
const Report = () => import(/* webpackChunkName: "Order_Report" */ '../components/report/Report.vue')

Vue.use(VueRouter)

const routes = [
  { path:'/', redirect:'/login'},
  { path:'/login', component: Login },
  { path:'/home', component: Home,
  redirect:'/welcome',
  children:[{ path:'/welcome', component: Welcome },
            { path:'/users', component: Users },
            { path:'/rights', component: Rights },
            { path:'/roles', component: Roles },
            { path:'/categories', component: Cate },
            { path:'/params', component: Params },
            { path:'/goods', component: GoodsList },
            { path:'/goods/add', component: Add },
            { path:'/orders', component: Order },
            { path:'/reports', component: Report },
          ] }


]

const router = new VueRouter({
  routes
})

//挂载路由导航守卫
router.beforeEach((to, from, next)=> {
  //to 将要访问的路径
  //from 代表从哪个路径跳转而来
  //next 是一个函数，表示放行
  //   next() 放行    next('/login') 强制跳转

  if(to.path === '/login') return next();
  //获取token
  const tokenStr = window.sessionStorage.getItem('token');
  if(!tokenStr) return next('/login')
  next()
})

export default router
